#include "Date.h"
Date::Date(int year, int month, int day)
{
	_year = year;
	_month = month;
	_day = day;
}
void Date::Print()
{
	cout << _year << "/" << _month << "/" << _day << endl;
}
bool Date::operator<(const Date& d)
{
	if (_year < d._year)
	{
		return true;
	}
	if (_year == d._year && _month < d._month)
	{
		return true;
	}
	if (_year == d._year && _month == d._month && _day < d._day)
	{
		return true;
	}
	return false;
}
bool Date::operator==(const Date& d)
{
	if (_year == d._year && _month == d._month && _day == d._day)
	{
		return true;
	}
	return false;
}
bool Date::operator<=(const Date& d)
{
	return *this < d || *this == d;
}
bool Date::operator>(const Date& d)
{
	return !(*this <= d);
}
bool Date::operator>=(const Date& d)
{
	return !(*this < d);
}
bool Date::operator!=(const Date& d)
{
	return !(*this == d);
}
Date& Date::operator+=(int day)
{
	if (day < 0)
	{
		return *this -= -day;
	}
	_day += day;
	while (_day > GetMonthDay(_year, _month))
	{
		_day -= GetMonthDay(_year, _month);
		++_month;
		if (_month == 13)
		{
			++_year;
			_month = 1;
		}
	}
	return *this;
}
Date Date::operator+(int day)
{
	Date tmp = *this;
	tmp += day;
	return tmp;
}
//Date Date::operator+(int day)
//{
//	Date tmp = *this;
//	tmp._day += day;
//	while (tmp._day > GetMonthDay(tmp._year, tmp._month))
//	{
//		tmp._day -= GetMonthDay(tmp._year, tmp._month);
//		++tmp._month;
//		if (tmp._month == 13)
//		{
//			++tmp._year;
//			tmp._month = 1;
//		}
//	}
//	return tmp;
//}
//Date& Date::operator+=(int day)
//{
//	return *this = *this + day;
//}
Date& Date::operator-=(int day)
{
	if (day < 0)
	{
		return *this += -day;
	}
	_day -= day;
	while (_day <= 0)
	{
		--_month;
		if (_month == 0)
		{
			_month = 12;
			--_year;
		}
		_day += GetMonthDay(_year, _month);
	}
	return *this;
}
Date Date::operator-(int day)
{
	Date tmp = *this;
	tmp -= day;
	return tmp;
}
Date& Date::operator++()
{
	return *this += 1;
}
Date Date::operator++(int i)
{
	Date tmp(*this);
	*this += 1;
	return tmp;
}
Date& Date::operator--()
{
	return *this -= 1;
}
Date Date::operator--(int)
{
	Date tmp(*this);
	*this -= 1;
	return tmp;
}
int Date::operator-(const Date& d)
{
	Date max = *this;
	Date min = d;
	int flag = 1;
	if (*this < d)
	{
		max = d;
		min = *this;
		flag = -1;
	}
	int n = 0;
	while (min < max)
	{
		min++;
		n++;
	}
	return n * flag;
}
int main()
{
	/*Date d1(2024, 8, 10);
	Date d2 = d1;
	d2.Print();
	d2 += 100;
	d2.Print();
	Date d3;
	d3 = d1 + 100;
	d3.Print();
	d1.Print();
	Date d4(2024, 10, 22);
	d4 -= 1362;
	d4.Print();*/
	/*Date d1(2024, 10, 22);
	d1 -= -100;
	d1.Print();*/
	/*Date d1(2024, 10, 22);
	--d1;
	Date d2 = d1--;
	d1.Print();
	d2.Print();*/
	Date d1(2024, 10, 22);
	Date d2(2021, 1, 29);
	cout << d1 - d2 << endl;
	return 0;
}